ネットワーク障害時に見るコマンド

 

オートネゴシエーションと実際のリンクアップ状況、Dropパケットの確認

# show interface

show interface
Interface ge1
  Link is UP
  Hardware is Ethernet
  HW addr: ac44.f23c.7475
  ifIndex 1, MRU 1522
  Speed-Duplex: auto(configured), 1000-full(current) ←注目
  Auto MDI/MDIX: on
  Interface counter:
    input  packets          : 2731069
           bytes            : 598015536
           multicast packets: 2754
    output packets          : 47531103
           bytes            : 25443897994
           multicast packets: 12124203
           broadcast packets: 20297143
           drop packets     : 3481 ←注目
Interface ge2
  Link is UP
  Hardware is Ethernet
  HW addr: ac44.f23c.7475
  ifIndex 2, MRU 1522
  Speed-Duplex: auto(configured), 1000-full(current) ←注目

(略)

 

 

コリジョン、エラーカウンタの確認

#show frame-counter

show frame-counter
Interface ge1 Ethernet MAC counters:
  Received:
    Packets               : 2731143
    Octets                : 598032130
    Broadcast packets     : 98303
    Multicast packets     : 2754
    Unicast   packets     : 2630086
    Undersize packets     : 0
    Oversize  packets     : 0
    Fragments             : 0
    Jabbers               : 0
    FCS errors            : 0 ←注目
    RX errors             : 0 ←注目

  Transmitted:
    Packets               : 47536031
    Octets                : 25445177751
    Broadcast packets     : 20301336
    Multicast packets     : 12124914
    Unicast   packets     : 15109781
    TX errors             : 0 ←注目
    Collisions            : 0 ←注目
    Drop packets          : 3481 ←注目



  Received and Transmitted:
    64octet       packets : 21197125
    65-127octet   packets : 2464047
    128-255octet  packets : 608116
    256-511octet  packets : 12263579
    512-1023octet packets : 269448
    1024-MAXoctet packets : 13464859
Interface ge2 Ethernet MAC counters:

 

 

 

リンクアップやリンクダウンのログ

#show logging

show logging
2018/08/04 13:47:58: [     NSM]:inf: Interface ge8 is up(1000-full)
2018/08/04 13:47:58: [    MSTP]:inf: Port up notification received for port ge8
2018/08/04 13:47:58: [     NSM]:inf: Interface ge18 is up(1000-full)
2018/08/04 13:47:58: [    MSTP]:inf: Port up notification received for port ge18
2018/08/04 13:47:58: [     NSM]:inf: Interface ge7 is up(1000-full)
2018/08/04 13:47:58: [    MSTP]:inf: Port up notification received for port ge7
2018/08/04 13:47:58: [     NSM]:inf: Interface ge3 is down

(略)

 

 

カウンター情報の初期化

# clear counters ge1

ポート1の情報を初期化する場合

状況再現をする場合にカウンターデータを初期化して、データを取得する為に使用します。

 

 

 

環境設定の確認

 

 

コンフィグの確認

#show running-config
show running-config
!
hostname edge1.SWX2300
!

(略)

 

 

ファームウェアバージョンの確認

# show environment

 show environment
SWX2300-24G BootROM Ver.1.00
SWX2300-24G Rev.2.00.14 (Fri Mar  9 11:46:25 2018) ←注目
main=SWX2300-24G ver=00 serial=S4L00999 MAC-Address=ac44.xxxx.9999
CPU:   0%(5sec)   1%(1min)   1%(5min)    Memory:  34% used
Configuration file: config0
Serial Baudrate: 9600
Boot time: 2018/07/31 23:27:06 +09:00
Current time: 2018/08/06 15:41:57 +09:00
Elapsed time from boot: 5days 15:59:1

 

 

VLAN

# show vlan brief

 show vlan brief
(u)-Untagged, (t)-Tagged

VLAN ID  Name                            State   Member ports
======= ================================ ======= ======================
1       default                          ACTIVE  ge1(u) ge2(u) ge3(u)
                                                 ge4(u) ge5(u) ge6(u)
                                                 ge7(u) ge8(u) ge9(u)
                                                 ge10(u) ge11(u)
                                                 ge12(u) ge13(u)
                                                 ge14(u) ge15(u)
                                                 ge16(u) ge17(u)
                                                 ge18(u) ge19(u)
                                                 ge20(u) ge21(u)
                                                 ge22(u) ge23(u)
                                                 ge24(u) ge25(u)
                                                 ge26(u) ge27(u)
                                                 ge28(u)

 

 

 

スパニングツリー

#show spanning-tree mst detail

show spanning-tree mst detail
% Default: Bridge up - Spanning Tree Enabled  - topology change detected
% Default: CIST Root Path Cost 0 - CIST Root Port 23 -  CIST Bridge Priority 32768
% Default: Forward Delay 15 - Hello Time 2 - Max Age 20 - Transmit Hold Count 6 - Max-hops 20
% Default: CIST Root Id 8001ac44f23c746e
% Default: CIST Reg Root Id 8001ac44f23c746e
% Default: CIST Bridge Id 8001ac44f23c7475
% Default: 1941 topology change(s)  - last topology change Mon Aug  6 15:35:02 2018

%   ge1: Port Number 1 - Ifindex 1 - Port Id 8001 - Role Designated - State Forwarding
%   ge1: Designated External Path Cost 0 -Internal Path Cost 20000
%   ge1: Configured Path Cost 20000  - Add type Explicit ref count 1
%   ge1: Designated Port Id 8001 - CIST Priority 128  -
%   ge1: CIST Root 8001ac44f23c746e
%   ge1: Regional Root 8001ac44f23c746e
%   ge1: Designated Bridge 8001ac44f23c7475
%   ge1: Message Age 0 - Max Age 20
%   ge1: CIST Hello Time 2 - Forward Delay 15
%   ge1: CIST Forward Timer 0 - Msg Age Timer 0 - Hello Timer 1 - topo change timer 0
%   ge1: forward-transitions 54
%   ge1: Version Multiple Spanning Tree Protocol - Received None - Send MSTP
%   ge1: No portfast configured - Current  portfast off
%   ge1: bpdu-guard  disabled  - Current bpdu-guard off
%   ge1: bpdu-filter disabled  - Current bpdu-filter off

(略)

 

 

 

ループの確認

#show loop-detect

show loop-detect
loop-detect: Disable

port      loop-detect    port-blocking           status
-------------------------------------------------------
ge1            enable           enable           ------
ge2            enable           enable           ------
ge3            enable           enable           ------
ge4            enable           enable           ------
ge5            enable           enable           ------
ge6            enable           enable           ------
ge7            enable           enable           ------
ge8            enable           enable           ------
ge9            enable           enable           ------
ge10           enable           enable           ------
ge11           enable           enable           ------
ge12           enable           enable           ------
ge13           enable           enable           ------
ge14           enable           enable           ------
ge15           enable           enable           ------
ge16           enable           enable           ------
ge17           enable           enable           ------
ge18           enable           enable           ------
ge19           enable           enable           ------

(略)

 

 

 

マックアドレステーブルの確認

# show mac-address-table

 show mac-address-table
VLAN  port   mac             fwd      type     timeout

(略)

 

 

 

l2ms

#show l2ms detail

show l2ms detail
Role : Slave

Status : Not managed

 

 

 

送信キュー使用率の表示

# show mls qos queue-counters

 show mls qos queue-counters
QoS: Disable
Interface ge1 Queue Counters:
  Queue 0          0.0 %
  Queue 1          0.0 %
  Queue 2          0.0 %
  Queue 3          0.0 %
  Queue 4          0.0 %
  Queue 5          0.0 %
  Queue 6          0.0 %
  Queue 7          0.0 %

Interface ge2 Queue Counters:
  Queue 0          0.0 %
  Queue 1          0.0 %
  Queue 2          0.0 %
  Queue 3          0.0 %
  Queue 4          0.0 %
  Queue 5          0.0 %
  Queue 6          0.0 %
  Queue 7          0.0 %

Interface ge3 Queue Counters:
  Queue 0          0.0 %

 

 

エラー検出機能の情報表示

#show errdisable

show errdisable
function        auto recovery          interval
-----------------------------------------------
BPDU guard      disable
Loop detect     enable                     300

port       reason
-----------------------

 

 

 

SFPモジュールの状態表示

# show ddm status

 show ddm status
             Temperature  High Alarm   High Warning Low Warning  Low Alarm
Interface    (Celsius)    Threshold    Threshold    Threshold    Threshold
------------ ------------ ------------ ------------ ------------ ------------
 ge25             -            -            -            -            -
 ge26             -            -            -            -            -
 ge27             -            -            -            -            -
 ge28             -            -            -            -            -

             Voltage      High Alarm   High Warning Low Warning  Low Alarm
Interface    (V)          Threshold    Threshold    Threshold    Threshold
------------ ------------ ------------ ------------ ------------ ------------
 ge25             -            -            -            -            -
 ge26             -            -            -            -            -
 ge27             -            -            -            -            -
 ge28             -            -            -            -            -

             Current      High Alarm   High Warning Low Warning  Low Alarm
Interface    (mA)         Threshold    Threshold    Threshold    Threshold
------------ ------------ ------------ ------------ ------------ ------------
 ge25             -            -            -            -            -
 ge26             -            -            -            -            -
 ge27             -            -            -            -            -
 ge28

 

 

 

 

テクニカルコマンド

# show tech-support

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